/* Print values for GDB, the GNU debugger.
- Copyright (C) 1986-2013 Free Software Foundation, Inc.
+ Copyright (C) 1986-2015 Free Software Foundation, Inc.
This file is part of GDB.
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include "gdb_string.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "value.h"
#include "valprint.h"
#include "floatformat.h"
#include "doublest.h"
-#include "exceptions.h"
#include "dfp.h"
-#include "python/python.h"
+#include "extension.h"
#include "ada-lang.h"
#include "gdb_obstack.h"
#include "charset.h"
#include <ctype.h>
-#include <errno.h>
-
/* Maximum number of wchars returned from wchar_iterate. */
#define MAX_WCHARS 4
/* Prototypes for local functions */
static int partial_memory_read (CORE_ADDR memaddr, gdb_byte *myaddr,
- int len, int *errnoptr);
+ int len, int *errptr);
static void show_print (char *, int);
&& TYPE_CODE (type) != TYPE_CODE_STRUCT
&& TYPE_CODE (type) != TYPE_CODE_ARRAY)
{
- if (!value_bits_valid (val, TARGET_CHAR_BIT * embedded_offset,
- TARGET_CHAR_BIT * TYPE_LENGTH (type)))
+ if (value_bits_any_optimized_out (val,
+ TARGET_CHAR_BIT * embedded_offset,
+ TARGET_CHAR_BIT * TYPE_LENGTH (type)))
{
val_print_optimized_out (val, stream);
return 0;
val_print_optimized_out (const struct value *val, struct ui_file *stream)
{
if (val != NULL && value_lval_const (val) == lval_register)
- fprintf_filtered (stream, _("<not saved>"));
+ val_print_not_saved (stream);
else
fprintf_filtered (stream, _("<optimized out>"));
}
+void
+val_print_not_saved (struct ui_file *stream)
+{
+ fprintf_filtered (stream, _("<not saved>"));
+}
+
void
val_print_unavailable (struct ui_file *stream)
{
break;
case TYPE_CODE_RANGE:
- /* FIXME: create_range_type does not set the unsigned bit in a
+ /* FIXME: create_static_range_type does not set the unsigned bit in a
range type (I think it probably should copy it from the
target type), so we won't print values which are too large to
fit in a signed integer correctly. */
const struct value_print_options *options,
const struct language_defn *language)
{
- volatile struct gdb_exception except;
int ret = 0;
struct value_print_options local_opts = *options;
struct type *real_type = check_typedef (type);
if (!options->raw)
{
- ret = apply_val_pretty_printer (type, valaddr, embedded_offset,
- address, stream, recurse,
- val, options, language);
+ ret = apply_ext_lang_val_pretty_printer (type, valaddr, embedded_offset,
+ address, stream, recurse,
+ val, options, language);
if (ret)
return;
}
return;
}
- TRY_CATCH (except, RETURN_MASK_ERROR)
+ TRY
{
language->la_val_print (type, valaddr, embedded_offset, address,
stream, recurse, val,
&local_opts);
}
- if (except.reason < 0)
- fprintf_filtered (stream, _("<error reading variable>"));
+ CATCH (except, RETURN_MASK_ERROR)
+ {
+ fprintf_filtered (stream, _("<error reading variable>"));
+ }
+ END_CATCH
}
/* Check whether the value VAL is printable. Return 1 if it is;
return 0;
}
+ if (value_entirely_unavailable (val))
+ {
+ if (options->summary && !val_print_scalar_type_p (value_type (val)))
+ fprintf_filtered (stream, "...");
+ else
+ val_print_unavailable (stream);
+ return 0;
+ }
+
if (TYPE_CODE (value_type (val)) == TYPE_CODE_INTERNAL_FUNCTION)
{
fprintf_filtered (stream, _("<internal function %s>"),
if (!options->raw)
{
- int r = apply_val_pretty_printer (value_type (val),
- value_contents_for_printing (val),
- value_embedded_offset (val),
- value_address (val),
- stream, 0,
- val, options, current_language);
+ int r
+ = apply_ext_lang_val_pretty_printer (value_type (val),
+ value_contents_for_printing (val),
+ value_embedded_offset (val),
+ value_address (val),
+ stream, 0,
+ val, options, current_language);
if (r)
return;
/* A scalar object that does not have all bits available can't be
printed, because all bits contribute to its representation. */
- if (!value_bits_valid (val, TARGET_CHAR_BIT * embedded_offset,
- TARGET_CHAR_BIT * TYPE_LENGTH (type)))
+ if (value_bits_any_optimized_out (val,
+ TARGET_CHAR_BIT * embedded_offset,
+ TARGET_CHAR_BIT * TYPE_LENGTH (type)))
val_print_optimized_out (val, stream);
else if (!value_bytes_available (val, embedded_offset, TYPE_LENGTH (type)))
val_print_unavailable (stream);
{
unsigned int things_printed = 0;
unsigned len;
- struct type *elttype, *index_type;
+ struct type *elttype, *index_type, *base_index_type;
unsigned eltlen;
/* Position of the array element we are examining to see
whether it is repeated. */
/* Number of repetitions we have detected so far. */
unsigned int reps;
LONGEST low_bound, high_bound;
+ LONGEST low_pos, high_pos;
elttype = TYPE_TARGET_TYPE (type);
eltlen = TYPE_LENGTH (check_typedef (elttype));
if (get_array_bounds (type, &low_bound, &high_bound))
{
- /* The array length should normally be HIGH_BOUND - LOW_BOUND + 1.
+ if (TYPE_CODE (index_type) == TYPE_CODE_RANGE)
+ base_index_type = TYPE_TARGET_TYPE (index_type);
+ else
+ base_index_type = index_type;
+
+ /* Non-contiguous enumerations types can by used as index types
+ in some languages (e.g. Ada). In this case, the array length
+ shall be computed from the positions of the first and last
+ literal in the enumeration type, and not from the values
+ of these literals. */
+ if (!discrete_position (base_index_type, low_bound, &low_pos)
+ || !discrete_position (base_index_type, high_bound, &high_pos))
+ {
+ warning (_("unable to get positions in array, use bounds instead"));
+ low_pos = low_bound;
+ high_pos = high_bound;
+ }
+
+ /* The array length should normally be HIGH_POS - LOW_POS + 1.
But we have to be a little extra careful, because some languages
- such as Ada allow LOW_BOUND to be greater than HIGH_BOUND for
+ such as Ada allow LOW_POS to be greater than HIGH_POS for
empty arrays. In that situation, the array length is just zero,
not negative! */
- if (low_bound > high_bound)
+ if (low_pos > high_pos)
len = 0;
else
- len = high_bound - low_bound + 1;
+ len = high_pos - low_pos + 1;
}
else
{
if (options->repeat_count_threshold < UINT_MAX)
{
while (rep1 < len
- && value_available_contents_eq (val,
- embedded_offset + i * eltlen,
- val,
- (embedded_offset
- + rep1 * eltlen),
- eltlen))
+ && value_contents_eq (val,
+ embedded_offset + i * eltlen,
+ val,
+ (embedded_offset
+ + rep1 * eltlen),
+ eltlen))
{
++reps;
++rep1;
/* Read LEN bytes of target memory at address MEMADDR, placing the
results in GDB's memory at MYADDR. Returns a count of the bytes
- actually read, and optionally an errno value in the location
- pointed to by ERRNOPTR if ERRNOPTR is non-null. */
+ actually read, and optionally a target_xfer_status value in the
+ location pointed to by ERRPTR if ERRPTR is non-null. */
/* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
function be eliminated. */
static int
partial_memory_read (CORE_ADDR memaddr, gdb_byte *myaddr,
- int len, int *errnoptr)
+ int len, int *errptr)
{
int nread; /* Number of bytes actually read. */
int errcode; /* Error from last read. */
nread--;
}
}
- if (errnoptr != NULL)
+ if (errptr != NULL)
{
- *errnoptr = errcode;
+ *errptr = errcode;
}
return (nread);
}
each. Fetch at most FETCHLIMIT characters. BUFFER will be set to a newly
allocated buffer containing the string, which the caller is responsible to
free, and BYTES_READ will be set to the number of bytes read. Returns 0 on
- success, or errno on failure.
+ success, or a target_xfer_status on failure.
+
+ If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
+ (including eventual NULs in the middle or end of the string).
- If LEN > 0, reads exactly LEN characters (including eventual NULs in
- the middle or end of the string). If LEN is -1, stops at the first
- null character (not necessarily the first null byte) up to a maximum
- of FETCHLIMIT characters. Set FETCHLIMIT to UINT_MAX to read as many
- characters as possible from the string.
+ If LEN is -1, stops at the first null character (not necessarily
+ the first null byte) up to a maximum of FETCHLIMIT characters. Set
+ FETCHLIMIT to UINT_MAX to read as many characters as possible from
+ the string.
Unless an exception is thrown, BUFFER will always be allocated, even on
failure. In this case, some characters might have been read before the
read_string (CORE_ADDR addr, int len, int width, unsigned int fetchlimit,
enum bfd_endian byte_order, gdb_byte **buffer, int *bytes_read)
{
- int found_nul; /* Non-zero if we found the nul char. */
int errcode; /* Errno returned from bad reads. */
unsigned int nfetch; /* Chars to fetch / chars fetched. */
- unsigned int chunksize; /* Size of each fetch, in chars. */
gdb_byte *bufptr; /* Pointer to next available byte in
buffer. */
- gdb_byte *limit; /* First location past end of fetch buffer. */
struct cleanup *old_chain = NULL; /* Top of the old cleanup chain. */
- /* Decide how large of chunks to try to read in one operation. This
- is also pretty simple. If LEN >= zero, then we want fetchlimit chars,
- so we might as well read them all in one operation. If LEN is -1, we
- are looking for a NUL terminator to end the fetching, so we might as
- well read in blocks that are large enough to be efficient, but not so
- large as to be slow if fetchlimit happens to be large. So we choose the
- minimum of 8 and fetchlimit. We used to use 200 instead of 8 but
- 200 is way too big for remote debugging over a serial line. */
-
- chunksize = (len == -1 ? min (8, fetchlimit) : fetchlimit);
-
/* Loop until we either have all the characters, or we encounter
some error, such as bumping into the end of the address space. */
- found_nul = 0;
*buffer = NULL;
old_chain = make_cleanup (free_current_contents, buffer);
if (len > 0)
{
- *buffer = (gdb_byte *) xmalloc (len * width);
+ /* We want fetchlimit chars, so we might as well read them all in
+ one operation. */
+ unsigned int fetchlen = min (len, fetchlimit);
+
+ *buffer = (gdb_byte *) xmalloc (fetchlen * width);
bufptr = *buffer;
- nfetch = partial_memory_read (addr, bufptr, len * width, &errcode)
+ nfetch = partial_memory_read (addr, bufptr, fetchlen * width, &errcode)
/ width;
addr += nfetch * width;
bufptr += nfetch * width;
else if (len == -1)
{
unsigned long bufsize = 0;
+ unsigned int chunksize; /* Size of each fetch, in chars. */
+ int found_nul; /* Non-zero if we found the nul char. */
+ gdb_byte *limit; /* First location past end of fetch buffer. */
+
+ found_nul = 0;
+ /* We are looking for a NUL terminator to end the fetching, so we
+ might as well read in blocks that are large enough to be efficient,
+ but not so large as to be slow if fetchlimit happens to be large.
+ So we choose the minimum of 8 and fetchlimit. We used to use 200
+ instead of 8 but 200 is way too big for remote debugging over a
+ serial line. */
+ chunksize = min (8, fetchlimit);
do
{
int need_escape = *need_escapep;
*need_escapep = 0;
- if (gdb_iswprint (w) && (!need_escape || (!gdb_iswdigit (w)
- && w != LCST ('8')
- && w != LCST ('9'))))
- {
- gdb_wchar_t wchar = w;
- if (w == gdb_btowc (quoter) || w == LCST ('\\'))
- obstack_grow_wstr (output, LCST ("\\"));
- obstack_grow (output, &wchar, sizeof (gdb_wchar_t));
- }
- else
+ /* iswprint implementation on Windows returns 1 for tab character.
+ In order to avoid different printout on this host, we explicitly
+ use wchar_printable function. */
+ switch (w)
{
- switch (w)
+ case LCST ('\a'):
+ obstack_grow_wstr (output, LCST ("\\a"));
+ break;
+ case LCST ('\b'):
+ obstack_grow_wstr (output, LCST ("\\b"));
+ break;
+ case LCST ('\f'):
+ obstack_grow_wstr (output, LCST ("\\f"));
+ break;
+ case LCST ('\n'):
+ obstack_grow_wstr (output, LCST ("\\n"));
+ break;
+ case LCST ('\r'):
+ obstack_grow_wstr (output, LCST ("\\r"));
+ break;
+ case LCST ('\t'):
+ obstack_grow_wstr (output, LCST ("\\t"));
+ break;
+ case LCST ('\v'):
+ obstack_grow_wstr (output, LCST ("\\v"));
+ break;
+ default:
{
- case LCST ('\a'):
- obstack_grow_wstr (output, LCST ("\\a"));
- break;
- case LCST ('\b'):
- obstack_grow_wstr (output, LCST ("\\b"));
- break;
- case LCST ('\f'):
- obstack_grow_wstr (output, LCST ("\\f"));
- break;
- case LCST ('\n'):
- obstack_grow_wstr (output, LCST ("\\n"));
- break;
- case LCST ('\r'):
- obstack_grow_wstr (output, LCST ("\\r"));
- break;
- case LCST ('\t'):
- obstack_grow_wstr (output, LCST ("\\t"));
- break;
- case LCST ('\v'):
- obstack_grow_wstr (output, LCST ("\\v"));
- break;
- default:
- {
- int i;
+ if (wchar_printable (w) && (!need_escape || (!gdb_iswdigit (w)
+ && w != LCST ('8')
+ && w != LCST ('9'))))
+ {
+ gdb_wchar_t wchar = w;
- for (i = 0; i + width <= orig_len; i += width)
- {
- char octal[30];
- ULONGEST value;
+ if (w == gdb_btowc (quoter) || w == LCST ('\\'))
+ obstack_grow_wstr (output, LCST ("\\"));
+ obstack_grow (output, &wchar, sizeof (gdb_wchar_t));
+ }
+ else
+ {
+ int i;
- value = extract_unsigned_integer (&orig[i], width,
+ for (i = 0; i + width <= orig_len; i += width)
+ {
+ char octal[30];
+ ULONGEST value;
+
+ value = extract_unsigned_integer (&orig[i], width,
byte_order);
- /* If the value fits in 3 octal digits, print it that
- way. Otherwise, print it as a hex escape. */
- if (value <= 0777)
- xsnprintf (octal, sizeof (octal), "\\%.3o",
- (int) (value & 0777));
- else
- xsnprintf (octal, sizeof (octal), "\\x%lx", (long) value);
- append_string_as_wide (octal, output);
- }
- /* If we somehow have extra bytes, print them now. */
- while (i < orig_len)
- {
- char octal[5];
+ /* If the value fits in 3 octal digits, print it that
+ way. Otherwise, print it as a hex escape. */
+ if (value <= 0777)
+ xsnprintf (octal, sizeof (octal), "\\%.3o",
+ (int) (value & 0777));
+ else
+ xsnprintf (octal, sizeof (octal), "\\x%lx", (long) value);
+ append_string_as_wide (octal, output);
+ }
+ /* If we somehow have extra bytes, print them now. */
+ while (i < orig_len)
+ {
+ char octal[5];
- xsnprintf (octal, sizeof (octal), "\\%.3o", orig[i] & 0xff);
- append_string_as_wide (octal, output);
- ++i;
- }
+ xsnprintf (octal, sizeof (octal), "\\%.3o", orig[i] & 0xff);
+ append_string_as_wide (octal, output);
+ ++i;
+ }
- *need_escapep = 1;
- }
+ *need_escapep = 1;
+ }
break;
}
}
LEN is -1. */
/* Determine found_nul by looking at the last character read. */
- found_nul = extract_unsigned_integer (buffer + bytes_read - width, width,
- byte_order) == 0;
+ found_nul = 0;
+ if (bytes_read >= width)
+ found_nul = extract_unsigned_integer (buffer + bytes_read - width, width,
+ byte_order) == 0;
if (len == -1 && !found_nul)
{
gdb_byte *peekbuf;
if (errcode != 0)
{
- if (errcode == EIO)
- {
- fprintf_filtered (stream, "<Address ");
- fputs_filtered (paddress (gdbarch, addr), stream);
- fprintf_filtered (stream, " out of bounds>");
- }
- else
- {
- fprintf_filtered (stream, "<Error reading address ");
- fputs_filtered (paddress (gdbarch, addr), stream);
- fprintf_filtered (stream, ": %s>", safe_strerror (errcode));
- }
+ char *str;
+
+ str = memory_error_message (errcode, gdbarch, addr);
+ make_cleanup (xfree, str);
+
+ fprintf_filtered (stream, "<error: ");
+ fputs_filtered (str, stream);
+ fprintf_filtered (stream, ">");
}
gdb_flush (stream);
{
printf_unfiltered (
"\"set print\" must be followed by the name of a print subcommand.\n");
- help_list (setprintlist, "set print ", -1, gdb_stdout);
+ help_list (setprintlist, "set print ", all_commands, gdb_stdout);
}
static void
{
printf_unfiltered (
"\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
- help_list (setprintrawlist, "set print raw ", -1, gdb_stdout);
+ help_list (setprintrawlist, "set print raw ", all_commands, gdb_stdout);
}
static void
projects / deliverable / binutils-gdb.git / blobdiff